磁浮列车电磁辐射仿真与验证评估技术研究

Simulation and Verification of Electromagnetic Radiation for the Moving Maglev Train

磁浮列车正常行进过程中对外部环境的电磁辐射安全性近年来受到各科技强国的广泛重视。本文采用多线传输线MTL方法,对磁浮列车电磁辐射场进行了电磁建模与仿真分析,并基于IEEE-Std-C95.1-2005、IEEEStd-C95.6-2002和ICNIP-2010以及GB8702-2014,标准,采用传感器法和接收天线法,现场测试验证了磁浮列车在不同运行状态下的电磁辐射场,开展电磁环境评估工作。研究表明:50~110 kHz,磁浮列车12 m处的辐射磁场呈周期性结构分布,仿真的最大值为69.4 dBuA/m;1~120 kHz频段内,磁浮列车的辐射磁场测量值小于90 mA/m;在9 kHz^18 GHz频段内,磁浮列车的辐射电场均小于110 dBuV/m(0.316 V/m),磁浮列车对外电磁辐射量值比相关国际标准限值至少低30 dB。本论文的研究工作可为我国新型高速磁浮列车电磁安全性研究奠定基础。

In recent years,the safety of electromagnetic radiation to the external environment during the normal operation of maglev train has been paid more and more attention.In this paper,the electromagnetic radiation field of maglev train is modeled and simulated by using the multi-line transmission line(MTL)method.Based on IEEE-Std-C95.1-2005,IEEE-Std-C95.6,ICNIP-2010 and GB 8702-2014 standards,the electromagnetic radiation field measurement and electromagnetic environmental assessment of the moving maglev train under different operating conditions are conducted.The results show that the radiated magnetic field of the maglev train is distributed periodically at 12 meters from 50kHz to 110 kHz,the maximum value of simulation is 69.4 dBμA/m,the measured value of the radiated magnetic field of the maglev train is less than 90 mA/m in 1 Hz to 120 kHz,and in 9 kHz to 18 GHz,the radiated electric field of the maglev train is less than 316 mV/m,and the external electromagnetic radiation of the maglev train is at least 30 dB lower than the relevant international standard limit.The research work of this paper can lay a foundation for the research of electromagnetic safety of new-type high-speed maglev train in China.